Usually during verification/compilation I get some errors, these errors indicates to me the lines that I get the error. How I can get the line numbers shown in a sidebar in order with a quick look to know which line of code is the troublesome?
Go to File > Preferences. Under the Settings tab, click the checkbox for Display line numbers.
Keep in mind that this option is available in the latest version of the Arduino Integrated Development Environment (v1.6.6). In case you are using GNU/Linux distribution is recomended to use the one that is NOT in the distribution's repositories but the one that is offered in https://www.arduino.cc/en/Main/Software